Water-meter.



No. 649,283. Patented may a, moo. W. DUNCAN.

WATER METER.

(Application filed Apr. 27, 1899.)

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(No Model.)

No. 649,283. Patented-May 8, l9l'l0.- W. DUNCAN.

WATEILMETER.

(AppliIcation filed Apr. 27, 1899.) (No Model.) 3 Sheets-Sheet 2,

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No. 649,283. Patented may s, |900. w. DUNCAN.

' WATER METER.

(Appiction led Apr. 27, 1899.1

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(No Model.)

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UNrED STATES PATENT OFFICE.

VILLIAM DUNCAN, OF OTTAIVA, CANADA.

WATER-METER.

srncrrrcArroN forming per@ of Letters Patent 110.649,283, dated May 8, 1900- Application tiled April 2 7, 1 8 99. l

To all whom, 'it 71mg/ concern:

Be it known that I, WILLIAM DUNCAN, a subject of the Queen of Great Britain, resid ing at the city of Ottawa, in the county of Carleton, in the Province of Ontario, Canada, have invent-ed new and useful Improvements in Tater-Meters, ot' which the following is a specification. Y

My invention relates to improvements in water-meters; and the object of the invention is to provide a simple, cheap, and durable form of meter and one which is also far more sensitive than those now in use and 4is also absolutely noiseless in its operations; and it consists, essentially, of a main cylinder provided with a piston having its rod connected by suitable mechanism to an ordinary meter-clock, a valve-piston cylinder having inlet and outlet ports, a piston-valve located therein and provided with ports, and a tubular slide-valve provided with suitable ports and having upwardly-extending projections entering the main cylinder through slots, all of which are hereinafter more particularly described.

Figure l is a perspective view of my meter partially broken away to exhibit interior constructions. Fig. 2 is a longitudinal section through Fig. l. Fig. 3 is a vertical cross-sectional view of Fig. 2. Fig. 4 is a sectional plan on line y, Fig. 2. Fig. 5 is a detail of my slide-valve pin. Fig. 6 is a longitudinal sectional view of a detail.

In the drawings like letters ot' reference indicate corresponding parts in each figure.

A is the main-cylinder casting.

A is the main cylinder. A2 is the piston located therein and cored out. c is a pistonrod suitably secu red within said hollow-cored piston-head.

a represents annular teeth formed on the piston-rod a.

a2 a3 are cylinder-heads.

a4 is a journal-bearin g secured by arms (1.5 to the head c3.

B is a gear-wheel j ournaled in lugs h, forming part of the journal a4.

b2 is a pinion forming part of the gear B.

C is a rod journaled in the center of the head a3. D is a toothed wheel jourualed on E is a .said rod C within the cylinder A.

Serial No. 714,702. (No model.)

pivoted escapement=lever having arms e operating said rack-wheel D.

d is a toothed quadrant formed on the in'- ner end of the lever E and designed to mesh with the pinion b2.

Fis a cylinder located beneath thc main cylinder.

G is a hollow divided core into which arc led the outlet and inlet pipes and which is divided longitudinally at h3.

The core G and cylinder F are connected by inlet-ports ff and outlet-'ports f f.

H is ahollow chest located ahovethe cylinder F and connected thereto by inlet-ports h h;

h2 is a cross-partition dividing the core II into two equal parts.

I is a piston-valve provided with annular' port or passage fr?, connecting the inlet-ports ff and outlet-ports 7i h.

il represents annular ports or passages conu necting the inleteports h' 7L' with the outletports f f.

J is a cylindrical bore in which is held the slide-valve K. The bore J is provided with outlet-ports j and inlet-ports j j* and a longitudinal exhaust-port,7"", connecting the bore J with the pipe g. The slide-valve K has inlet-ports 7s It cut in the ends and out let-ports 7a2 7a3.

K is a longitudinal exhaust-'port registeru ing with eXhaust-portj5 in the bore J.

7a4 represents slots connecting the bore J with the main cylinder A.

h5 represents pins secured in the slide-valve K and having heads provided with broad iiat inner .faces 7c, against which the piston is designed to operate.

h4 represents openings connecting the main cylinder A and cylinder F.

L represents passages formed in the cylinder-heads connecting the end of the s1ide valve bore J with the passageway l leading to the inlet-pipe g.

Having now described the principal parts involved in my invention, I shall briefly describe the operations of the same.

The water is lead by the passage-way l to and through the passage-ways L in the cylinder-heads into contact with the end of the At the same time water is allowed to fiow IOO through the inner pipe into the core or chamber G, when it passiesithrough the inlet-port fand by means of the annular port i is conducted to and through the outlet-port into the chest H, whence it passes by means of the opening h4 into the main cylinder A, where it comes into operating contact with pistonhead A2, driving it in the direction indicated by arrow. The piston A in passing to the opposite end of the cylinder comes in contact with the face-plate on the end of the pin its, moving the valve inthe direction indicated by arrow, so as to bring the port 7a into registering position with the port j* and the port 7c3 into registering position with the port, and Water passes from the end of the valve K into the cylinder F, where it com es in contact with the end of the piston-valve I, driving it in the direction indicated by arrow. By this means the ports h and f are closed and the inlet-ports hf open by the annular port fi, registering with these ports. Water now passes through these ports into the core G and out by the take-off pipe. The machine is now reversed and the same operation takes place at the reverse end, both sides of the machine being identical. While the reverse action takes place the water is driven through the ports jjz by the return of the piston-valve I, these port-s being caused to register by the return of the main piston A2. The water then escapes through the exhaust-ports K ,7'5 out into the take-0E pipe. As the piston II moves backward and forward it oscillates the lever E through the rack a, gear B, pinion b2, and quadrant d, so as to bring its arms e into operatingI contact with slanting teeth on the wheel D on the shaft C, such shaft being connected to a meter-clock.

It Will be seen from this description that my meter is very simple in construction and can be manufactured at a minimum expenditure of time and labor and at comparatively small cost. Another advantage which I derive from my construction is that my machine is absolutely noiseless, the piston and pistonvalve being cushioned by the exhaust-water as it is forced out of the machine.

My form of meter is very sensitive and no water can possibly be lost in passing through the same.

What I claim as my invention is l. In a machine of the class described, the combination with the main cylinder, a piston operating therein having its piston-rod connected to a meter-clock mechanism, of a second cylinder located immediately beneath and directly connected by ports with the main cylinder, ports in said second cylinder arranged in pairs, a plurality of valves in said cylinder, the outer ports of each pair admitting let and outlet ports, means for operating said valve from the main cylinder whereby the slide-valve in lower cylinder is operated by the iniiux and reflux of the water and the ends of the lower cylinder provided with deadwater to serve as a cushion, substantially as described.

3. In combination the main cylinder and piston located therein, the piston-valve cylinder and piston-valve ports connecting the inlet-pipe and main cylinder through said piston -valve cylinder, a tubular slide valve working in the suitable bore outlet and inlet ports therein designed to register alternately with outlet and inlet ports connecting said bore with main cylinder, slots cut between main cylinder and cylinder-bore pins secured in said slide-valve and projecting through said slots to form contact with the piston in its reciprocating motion as and for the pur- IOO ternately register in pairs, pins secured in the slide-valve projecting through slots into the cylinder and having heads with broad iiat inner faces designed to form contact with the cylinder as and for the purpose specified.

5. The combination with the main cylinder and piston of a pistonrod secured to said piston an annular toothed rack formed thereon, a journaled box secured to one of the end plates of the cylinder, a rod jonrnaled centrally of the plate a rack-wheel secured thereon, a rocking detent pivoted to said j ournal-box and designed to operate said rack- Wheel and a toothed quadrant at its inner end suitably connected by gears to said annular rack as and for the purpose specified.

Ottawa, Canada, April 15, 1899.

WILLIAM DUNCAN.

Vitnesses:

CHAs. J. WHELAN, OSCAR GRoULX. 

